These units are packed with functionality and are remarkably easy to use. Field Metrology Wells are lightweight, small, and quick to reach temperature set points; yet they are stabile, uniform, and precise. This industrial product line is perfect for transmitter-loop calibration, comparison calibration, or a simple check of a thermocouple sensor. With the “process” option, you have no need to carry additional tools into the field. It includes a built-in readout for resistance, voltage, and mA measurement, 24V loop power and on-board documentation.